ENGINE MAINTENANCE PREVENTIVE MAINTENANCE
– 168 – Y53-6033
Regional Haul (R05/10)
WARNING! Never idle your vehicle for pro-
longed periods of time if you sense that
exhaust fumes are entering the cab. Investi-
gate the cause of the fumes and correct it as
soon as possible. If the vehicle must be driven
under these conditions, drive only with the
windows slightly open. Failure to repair the
source of the exhaust fumes may lead to
death, personal injury or serious illness.
NOTE: Keep the engine exhaust system and the
vehicle’s cab ventilation system properly main-
tained. It is recommended that the vehicle’s
exhaust system and cab be inspected:
• By a competent technician every 15,000 miles.
• Whenever a change is noticed in the sound of the
exhaust system.
• Whenever the exhaust system, underbody, cab or
sleeper is damaged.
Engine Lubrication
Proper engine lubrication depends on ambient tempera-
ture and where the vehicle will be operated. Use the rec-
ommended oil for the weather conditions outside.
NOTE: For engine oil specifications, oil change
intervals, engine filter requirements or general
engine maintenance procedures, refer to the
Engine Operation Manual included with your
vehicle or the engine manufacturer’s service
manual.
Service Intervals
• Check engine oil daily.
Oil Draining:
• Refer to the engine manufacturer's Engine Operation
and Maintenance Manual supplied with your vehicle
for information about draining and refilling engine oil,
engine crankcase capacity, engine oil type, and
changing oil filters, etc.
WARNING! Hot engine oil can be dangerous.
You could be seriously burned. Let the engine
oil cool down before changing it.
• Drain the oil into a container designed for this pur-
pose.
